Găitan Vasile Gheorghiță, Zagan Ionel
Faculty of Electrical Engineering and Computer Science, Stefan cel Mare University, 720229 Suceava, Romania.
Integrated Center for Research, Development and Innovation in Advanced Materials, Nanotechnologies and Distributed Systems for Fabrication and Control (MANSiD), Stefan cel Mare University, 720229 Suceava, Romania.
Sensors (Basel). 2021 Jan 1;21(1):246. doi: 10.3390/s21010246.
This paper presents the relevant aspects regarding the experimental implementation and performance evaluation of an Internet of things (IoT) gateway for the Modbus extension. The proposed Modbus extension specifications are extended by defining the new optimized message format, and the structure of the acquisition cycle for obtaining a deterministic temporal behavior and solutions are presented for the description of devices at the MODBUS protocol level. Three different implementations are presented, and the Modbus extension's performance is validated regarding the efficiency in the use of the acquisition cycle time. The software and hardware processing time and the importance and effect of the various components are analyzed and evaluated. They all support the implementation of an Internet of things gateway for Modbus extension. This paper introduces solutions for the structure of the acquisition cycle to include other valuable extensions, discusses the performance of a real implementation in the form of a gateway, adds new features to the Modbus extension specification, and strengthens some of the existing ones. In accordance with the novelty and contribution of this paper to the field of local industrial networks, the results obtained in the analysis, testing, and validation of the Modbus extension protocol refer to the extending of the Modbus functions for industrial process monitoring and control management.
本文介绍了用于Modbus扩展的物联网(IoT)网关的实验实现和性能评估的相关方面。通过定义新的优化消息格式来扩展所提出的Modbus扩展规范,并给出了用于获得确定性时间行为的采集周期结构,以及在MODBUS协议级别描述设备的解决方案。给出了三种不同的实现方式,并针对采集周期时间的使用效率对Modbus扩展的性能进行了验证。分析和评估了软件和硬件处理时间以及各个组件的重要性和影响。它们都支持用于Modbus扩展的物联网网关的实现。本文介绍了采集周期结构的解决方案以纳入其他有价值的扩展,讨论了以网关形式的实际实现的性能,为Modbus扩展规范添加了新功能,并强化了一些现有功能。根据本文在本地工业网络领域的新颖性和贡献,在Modbus扩展协议的分析、测试和验证中获得的结果涉及为工业过程监控和控制管理扩展Modbus功能。